National Science Olympiad Forum By SOF Olympiad Trainer - Page 286
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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 4

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

There two 'S' in the word 'COSMOS' so, 'COSMOS' cannot be made from the given word.


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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 4

Ans 1:

Om Satish Punse from Terna Orchid the international school koparkhairne, Navi mumbai
Class : Class 5
What are first class levers and second class levers?

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Tweezers are third class lever whereas see-saw, crowbar and scissors are first class levers.


Ans 3:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
Well, why don't they teach all this stuff in the synopsis?!They should, but, Admin from revisewise is correct.

Ans 4:

Kavin from ISG , Muscat, Muscat
Class : Class 5
snow white are you too selected this year 2020-2021

Ans 5:

Sanaya Singh from Hiranandani Foundation, Mumbai
Class : Class 2
The person called admin is correct

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 8
Admin is correct

Ans 7:

Syed Hrehaan Ahamed from Bahrain Indian School, Manama
Class : Class 8

Ans 8:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7

Ans 9:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
I think that he/she is.

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

 Embankment is built on the banks of the river. It stops the water of the river from flooding the fields.


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SANJEEV VARSHNEY from Lotus valley international school, Noida
Subject :NSO    Class : Class 7

Ans 1:

Rithvik from BVM Global, Chennai
Class : Class 8
True plastic is a BAD CONDUCTOR but it’s not an INSULATOR right? So possibly it would naturally take some time .

Ans 2:

Trina from Ganges Valley School, Hyderabad
Class : Class 8
plastic is a bad conductor then it would be C

Ans 3:

Archishman Pal from Sri Krishna Mission School, Agartala
Class : Class 8
I agree with Srijan Anand !!!

Ans 4:

Anshika Minocha from DPS Vasant Kunj, NEW DELHI
Class : Class 8
I agree.

Ans 5:

Srijan Anand from VIBGYOR HIGH, Bangalore
Class : Class 7
Plastic is not a good conductor of heat. So how should the answer be A?

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Necro from New Tulip international school, Ahmedabad
Subject :NSO    Class : Class 7

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student from school, city
Subject :NSO    Class : Class 7

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ZEHRA MAZHAR from GAIL D A V SCHOOL PUBLIC SCHOOL, AURAIYA
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

A. Incorrect - The first metro service was inaugurated in Kolkata in 1984 by former Prime Minister Indira Gandhi.
B. Correct 
C. Incorrect - Transport facilities are necessary for International trade.
D. Incorrect - Auto rickshaw are used by passengers to travel short distances in the same city or village.


Ans 2:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 8
ADMIN YOUR MASTER ANSWER CORRECT

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AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur
Subject :NSO    Class : Class 8

The given diagram shows nitrogen cycle in the ecosystem. P, Q, R, S and T represent different chemical conversion steps in the cycle.


Which process (P - T) is correctly paired with the organismal group performing that step?
I. P Nitrobacter
II. Q Bacteria symbiotic with plants
III. R Denitrifying bacteria
IV. S Nitrifying bacteria
V. T Nitrogen fixing bacteria, such as Rhizobium or cyanobacteria

AIII, IV and V
BIV and V
CI, III and IV
DIII and IV


c=correct answer

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C


Ans 2:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7

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Bhanu Pratap Singh Chouhan from Billabong high , BHOPAL
Subject :NSO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

All insects lay eggs and have six legs. Head louse (D) is a wingless insect. So it cannot fly. Mosquito (B) and housefly (C) are winged insects so they can fly. Spider (A) is not an insect. It has eight legs. It does not have wings so it also cannot fly.


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